Wire-stretcher.



H. L. GORDON.

WIRE STRETCHER.

APPLICATION FILED DEC.'8.1914.

1,271,564. Patented July 9,1918.

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HARRY L. GORDON, OF CHICAGO, ILLINOIS.

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Specification of Letters Patent.

Patented July 9, 1918.

Application filed December 8, 1914. Serial No. 876,091.

To all whom it may concern:

Be it known that I, HARRY L. GORDON, a citizen of the United States, and a resident of the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Wire-Stretchers, of which the following is a specification.

My invention relates to improvements in wire stretchers, and more particularly to wire stretohers employed in conjunction with concrete molds, the object of the invention being to provide a simple and efficient instrument of this character which may be readily used and disconnected after use.

The invention consists in the combinations and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawing forming a part of this specification, and in which,

Figure 1 is a section illustrating an instrument embodying my invention, in one position of use,

Fig. 2, a face view of the instrument illustrating its use in conjunction with a wire 1 Fig. 3, a perspective view of the instrument illustrating its use in conjunction with a wire loop, and

Fig. 4, a sectional view illustratingthe use pf the instrument in conjunction with a .wire

oop.

Thev preferred form of construction asillustrated in the drawing comprises a handle member 5 provided with a curved bean ing member 6 projecting laterally from one side of said handle'member. The bearing member 6 is formed with its outer bearing surface in the form. of a circle tangent with the corresponding surface of handle mem-v ber 5, the extreme end 7 of said bearing surface being flattened and extending in a direction to intersect the extreme end of the handle member, as indicated in Fig. 1. A reinforcing web or flange 8 is extended between the extreme end of bearin surface 6 and the handle 5 and a centre slot 9 is formed in bearing member 6, as shown. A central opening 10 is formed in the instrument in the neighborhood of the juncture between bearing member 6 and handle '5 for the reception of-the end of a wire. The extreme end of handle member 5 is provided with a slot 11 for the passage of the nail or screw 12 to secure the instrument in position, as indicated in Fig. 1. 1

In the use illustrated inFig. 1, the instrument is employed for stretching a single wire through a concrete mold 14, in which use the instrument is reversed from the position shown in full lines in Fig. 1, and placed with the outer face of handle 5 flat against the outer side of the mold 14 and the end of wire 13 is passed through opening 10 and bent upwardly against the corresponding face of handle member 5, as indicated by dotted lines in Fig. 1. Then handle member 5 is drawn downwardly and outwardly through an angle slightly greater than 180 degrees, bearing surface 6 sliding against the face of mold side 1'4 to the position indicated in full lines in Fig. 1, the bear.- ing. surface 6 being finished smooth for this purpose. The stretchin action is the result of the cam like action of the surface 6 operating against the mold side. In the position indicated by full lines in Fig. 1, the end of handle member 5 is placed against the outer side of mold side 14 and is held in this position by the tension in wire 13 which thus efiects automatic locking of the stretcher in position to hold the stretched wire.

Putting the operation into different words, the wire 13 is thrown past the center of curvature of bearing surface 6 thus effecting the automatic locking of the parts. Nail or screw 12 may bethen placed in positionto prevent mischievous or accidental disengagement of the instrument. The particular use illustrated in Fig. 1 is that in which it is desired to stretch the wire 13 through the mold 14 and clamp the same in position-to holdthe sides of'the mold firmly in place, and the instrument will be found to be easily operated and highly efficient in use. Lugs or shoulders 15 are projected from each side of bearing member 6, as indicated, and are provided with engaging notches 16 adapted to engage the ends of a wire loop.

The use illustrated in Fig. 4 is one in which it is desired to stretch a wire loop 17 passing through a mold form 18 and around binding or holding beams 19. To this end the instrument is arranged against the face of the corresponding beam 19 and the ends of loop 17 passed through notches .16 and bent upwardly. Then handle memher 5 drawn downwardly asbefore and automatically locked in position by the tension in the ends of Wire 17 as will be understood. To release the" instrument; "all that is necessary is to raise handle 5, as w ill be readily understood.

While I have illustrated and described the preferre'd form of co'i1st1'uctioi1 for carrying my invention into efifect, this iscapabl'e of variation and modification without part ngirom t e sp r t of t e inven therefore, QJ jWi h ql eulimi ed .the precise details ,of construction set forth, but desiretoj avail myselfof such variations n mod c ti s s some w th nwit sc p of t app nded a m .'Having'i 'described my inventionwhat I claim as new and desire to secure by. Letters Patent is V 1. Af wire j stretcher comprising wire gripping m'e'ans a nd aysliding" can; like bearing surface r'coiip erating" therewith, to cause stretching of a wire gripped by said grip- "pingmeans when said surface is-slidffrom one position to another, substantially as; de-

scribe d."

' -2. A wire stretcher comprising an operat- .ing"handle having a smooth curved sliding bearing cam head ext ending laterally from the end thereof and' having wire gripping means ,thereon "nearxthe juncture of" the handleand can'i head, substantially asidescribed: i i

3; A wire stretcher comprising an oper- .ating'handleandn smooth curved cam like bearing member extending laterally thereneighborhood offthe juncture between said handle and said bearing member, andsaid handle being provided with anfipefture adapted toreceive a securing meniber,"substaintially "as described? """4l.fA wire stretcher comprising an operating handlef and a smooth curved bearing member" and a wire ehga'gin'g opening'ih the irieighborlibod its" juncture Copies of patent may be obtained for five cents each, by addressing the Commissioner o Patents,

handle; and a lug projecting from each side of said bearing member in the neighborhood of its juncture with said handle, there being a notclf iii eaclrof said lugs, substantially as described. bi' 'A wire stretcher comprising an operatii1g h andle and a smooth curvedcmnlike be-airbag" member extending laterally there- .from;. there being a slot formed in said bearing member extending substantially throughout the operative; length ;.of said 'bearing inember and wire engaging openingin the neighborhood of its juncture with 'aid handle, substantially 'as described.

6.; Awire'stretcher comprising an operating handle and a bearing melnber therefor adzqited to operate against theside of an object; and'wire engaging means on said "haifd'le' adj acent said bearing Imemberythe "parts bein Se arranged and combined as to' cause the lineo ftension'o'n saidwire engag- "ing' i'fneans tofcross the operative "center' of said "bearing memb'erduring operation of said 1121111316 CO '-e l:l (3 (;l3 a lll'JO ID atielocking 0f said'haiid'lef in'stretching' po'sitioni 's bt tia11yas described." v

7. A Wire stretcher comprising an operati ghm'dle bearing member therefor "adapted tobper'at againstthe side o'f an obhandle adj ac ent said bearing member; ';'the

lugs to dross the operative" center Lof "said bearing member during operation ofgsaid fhfandle 'to effect'looki'iigfbf'lsaid handle in stretching position;

scribed. s In testimony whereof I havesigned my name to this specification 'irtlie 'pr'eseu a of two subscribing witnesses.

- L seem Witnesses: Jos' nuA R. H -Porrs, 

